User Manual

Card Setup
Sealevel Systems ULTRA-485 Page 8
SIO-485
With the 5-position shunt in the SIO-485 mode, the ULTRA 485 is compatible
with the Sealevel Systems SIO-485 (part# 3054) with the following signals
supported:
EIA-530
E4
SIO-485
Figure 7 - DIP-shunt E4 (SIO-485 Mode)
/Signal Name Pin # Mode
GND Ground 7
TDB TX+ Transmit Positive 24 Output
TDA TX- Transmit Negative 25 Output
RDB RX+ Receive Positive 12 Input
RDA RX- Receive Negative 13 Input